Hex Head Sleeve Anchor M8X40 Carbon Steel Hex Nut Sleeve Anchor Expansion Bolt Screw 304 Stainless Steel Anchors Expansion is created by tightening a threaded bolt which draws a tapered cone expanding a sleeve against the walls of the hole. Description:Sleeve Expansion Bolt consists of a 304 stainless steel body, spacer, and sleeve, which expands to secure the anchors in place Product Name: Sleeve Anchor; Material: 304 Stainless Steel; Weight: 141g Bolts and accessories are made of 304 stainless steel, which has higher hardness, corrosion resistance and rust resistance. Widely used in home and office appliances, communication equipment, mechanical assembly and other industrial equipment, and provide a firm fixing indoors and outdoors Anchor consists of a 304 stainless steel body, spacer, and sleeve, which expands to secure the anchor in place. SENDILI Expansion Bolt Sleeve Anchor 2pcs, 304 Stainless Steel External Hex Head Width: 13mm / 0., 5; Washer Size: 24mm x 1., 5mm / 0., 94 x 0., 06 (D*T)